This type of SIVT involves inserting, deleting, or misattributing cookies to manipulate or falsify the prior activity of users. Also known as ‘cookie dropping,’ it pertains to the fraudulent manipulation of visitor cookies to disguise or conceal legitimate user cookies.
Often considered a black hat online marketing technique, cookie stuffing can potentially generate fraudulent affiliate income for the cookie stuffer by overwriting legitimate affiliate cookies. A website visitor may unknowingly receive a third-party cookie from a website unrelated to the one actually visited. Later on, if the visitor goes to a targeted website and completes a qualifying transaction or makes a purchase, the cookie stuffer illegally earns a commission from the targeted site and deprives the legitimate affiliate of its referral commission.